Skip Montanaro | e5d7f7f | 2002-09-20 14:16:59 +0000 | [diff] [blame] | 1 | +++++++++++ |
| 2 | Python News |
| 3 | +++++++++++ |
| 4 | |
Anthony Baxter | b0c6630 | 2004-11-04 05:23:17 +0000 | [diff] [blame] | 5 | (editors: check NEWS.help for information about editing NEWS using ReST.) |
| 6 | |
Guido van Rossum | 45aecf4 | 2006-03-15 04:58:47 +0000 | [diff] [blame] | 7 | What's New in Python 3000? |
| 8 | ========================== |
Thomas Wouters | 4d70c3d | 2006-06-08 14:42:34 +0000 | [diff] [blame] | 9 | |
Neal Norwitz | 4886cc3 | 2006-08-21 17:06:07 +0000 | [diff] [blame] | 10 | *Release date: XX-XXX-200X* |
| 11 | |
| 12 | TO DO |
| 13 | ----- |
| 14 | |
Georg Brandl | 66a796e | 2006-12-19 20:50:34 +0000 | [diff] [blame] | 15 | - See PEP 3000, 3100. |
Neal Norwitz | 4886cc3 | 2006-08-21 17:06:07 +0000 | [diff] [blame] | 16 | |
Neal Norwitz | 4886cc3 | 2006-08-21 17:06:07 +0000 | [diff] [blame] | 17 | - Weed really old/weird stuff from the library. |
| 18 | |
| 19 | - Unify range() and xrange(). |
| 20 | |
Neal Norwitz | 4886cc3 | 2006-08-21 17:06:07 +0000 | [diff] [blame] | 21 | - Rework the standard I/O library to use bytes for binary files. |
| 22 | |
| 23 | - Make strings all Unicode. |
| 24 | |
Neal Norwitz | 4886cc3 | 2006-08-21 17:06:07 +0000 | [diff] [blame] | 25 | - Get rid of various compatibility-related flags (e.g. division flags). |
| 26 | |
Neal Norwitz | 378b2c9 | 2006-08-29 07:57:22 +0000 | [diff] [blame] | 27 | |
Neal Norwitz | 4886cc3 | 2006-08-21 17:06:07 +0000 | [diff] [blame] | 28 | Core and Builtins |
| 29 | ----------------- |
| 30 | |
Neal Norwitz | 2633c69 | 2007-02-26 22:22:47 +0000 | [diff] [blame^] | 31 | - Remove the exceptions module, all the exceptions are already builtin. |
| 32 | |
Guido van Rossum | 0240b92 | 2007-02-26 21:23:50 +0000 | [diff] [blame] | 33 | - input() becomes raw_input(): the name input() now implements the |
| 34 | functionality formerly known as raw_input(); the name raw_input() |
| 35 | is no longer defined. |
| 36 | |
Brett Cannon | 3959046 | 2007-02-26 22:01:14 +0000 | [diff] [blame] | 37 | - Classes listed in an 'except' clause must inherit from BaseException. |
Brett Cannon | f74225d | 2007-02-26 21:10:16 +0000 | [diff] [blame] | 38 | |
Guido van Rossum | cc2b016 | 2007-02-11 06:12:03 +0000 | [diff] [blame] | 39 | - PEP 3106: dict.iterkeys(), .iteritems(), .itervalues() are now gone; |
| 40 | and .keys(), .items(), .values() return dict views. |
| 41 | |
Guido van Rossum | 8b54536 | 2007-02-09 23:52:14 +0000 | [diff] [blame] | 42 | - PEP 3105: print is now a function. Also (not in the PEP) the |
| 43 | 'softspace' attribute of files is now gone (since print() doesn't use |
| 44 | it). A side effect of this change is that you can get incomplete |
| 45 | output lines in interactive sessions: |
| 46 | |
| 47 | >>> print(42, end="") |
| 48 | 42>>> |
| 49 | |
| 50 | We may be able to fix this after the I/O library rewrite. |
Guido van Rossum | 4502c80 | 2007-02-09 05:42:38 +0000 | [diff] [blame] | 51 | |
Brett Cannon | 398db8b | 2007-01-29 23:44:37 +0000 | [diff] [blame] | 52 | - PEP 3102: keyword-only arguments. |
| 53 | |
Guido van Rossum | d4588c1 | 2007-02-13 19:55:23 +0000 | [diff] [blame] | 54 | - Int/Long unification is complete. The 'long' built-in type |
Guido van Rossum | ec7027f | 2007-01-30 00:00:40 +0000 | [diff] [blame] | 55 | and literals with trailing 'L' or 'l' have been removed. |
| 56 | Performance may be sub-optimal (haven't really benchmarked). |
Guido van Rossum | ab18684 | 2007-01-14 03:42:30 +0000 | [diff] [blame] | 57 | |
| 58 | - 'except E, V' must now be spelled as 'except E as V' and deletes V |
| 59 | at the end of the except clause; V must be a simple name. |
| 60 | |
Neal Norwitz | c150536 | 2006-12-28 06:47:50 +0000 | [diff] [blame] | 61 | - Added function annotations per PEP 3107. |
| 62 | |
Georg Brandl | 66a796e | 2006-12-19 20:50:34 +0000 | [diff] [blame] | 63 | - Moved intern() to sys.intern(). |
| 64 | |
| 65 | - exec is now a function. |
| 66 | |
| 67 | - Renamed nb_nonzero to nb_bool and __nonzero__ to __bool__. |
Jack Diederich | 4dafcc4 | 2006-11-28 19:15:13 +0000 | [diff] [blame] | 68 | |
Neal Norwitz | 4886cc3 | 2006-08-21 17:06:07 +0000 | [diff] [blame] | 69 | - Classic classes are a thing of the past. All classes are new style. |
| 70 | |
| 71 | - Exceptions *must* derive from BaseException. |
| 72 | |
| 73 | - Integer division always returns a float. The -Q option is no more. |
| 74 | All the following are gone: |
| 75 | * PyNumber_Divide and PyNumber_InPlaceDivide |
| 76 | * __div__, __rdiv__, and __idiv__ |
| 77 | * nb_divide, nb_inplace_divide |
| 78 | * operator.div, operator.idiv, operator.__div__, operator.__idiv__ |
| 79 | (Only __truediv__ and __floordiv__ remain, not sure how to handle them |
| 80 | if we want to re-use __div__ and friends. If we do, it will make |
| 81 | it harder to write code for both 2.x and 3.x.) |
| 82 | |
| 83 | - 'as' and 'with' are keywords. |
| 84 | |
| 85 | - Absolute import is the default behavior for 'import foo' etc. |
| 86 | |
Neal Norwitz | 378b2c9 | 2006-08-29 07:57:22 +0000 | [diff] [blame] | 87 | - Removed support for syntax: |
| 88 | backticks (`x`), <> |
| 89 | |
Neal Norwitz | 4886cc3 | 2006-08-21 17:06:07 +0000 | [diff] [blame] | 90 | - Removed these Python builtins: |
Neal Norwitz | 81fe341 | 2007-02-26 21:42:55 +0000 | [diff] [blame] | 91 | apply(), coerce() |
Neal Norwitz | 4886cc3 | 2006-08-21 17:06:07 +0000 | [diff] [blame] | 92 | |
Neal Norwitz | 378b2c9 | 2006-08-29 07:57:22 +0000 | [diff] [blame] | 93 | - Removed these Python methods: |
| 94 | {}.has_key |
| 95 | |
Neal Norwitz | 4886cc3 | 2006-08-21 17:06:07 +0000 | [diff] [blame] | 96 | - Removed these Python slots: |
| 97 | __coerce__, __div__, __idiv__, __rdiv__ |
| 98 | |
| 99 | - Removed these attributes from Python modules: |
| 100 | * operator module: div, idiv, __div__, __idiv__ |
| 101 | |
Neal Norwitz | 4886cc3 | 2006-08-21 17:06:07 +0000 | [diff] [blame] | 102 | - Removed these C APIs: |
Neal Norwitz | 378b2c9 | 2006-08-29 07:57:22 +0000 | [diff] [blame] | 103 | PyNumber_Coerce(), PyNumber_CoerceEx() |
Neal Norwitz | 4886cc3 | 2006-08-21 17:06:07 +0000 | [diff] [blame] | 104 | |
| 105 | - Removed these C slots/fields: |
| 106 | nb_divide, nb_inplace_divide |
| 107 | |
| 108 | - Removed these macros: |
| 109 | staticforward, statichere, PyArg_GetInt, PyArg_NoArgs |
| 110 | |
| 111 | - Removed these typedefs: |
| 112 | intargfunc, intintargfunc, intobjargproc, intintobjargproc, |
| 113 | getreadbufferproc, getwritebufferproc, getsegcountproc, getcharbufferproc |
| 114 | |
| 115 | - Removed these opcodes: |
Neal Norwitz | 378b2c9 | 2006-08-29 07:57:22 +0000 | [diff] [blame] | 116 | BINARY_DIVIDE, INPLACE_DIVIDE, UNARY_CONVERT |
| 117 | |
| 118 | - zip returns an iterator |
| 119 | |
| 120 | - Additions: |
Georg Brandl | 66a796e | 2006-12-19 20:50:34 +0000 | [diff] [blame] | 121 | set literals, ellipsis literal |
Neal Norwitz | 378b2c9 | 2006-08-29 07:57:22 +0000 | [diff] [blame] | 122 | |
Neal Norwitz | 4886cc3 | 2006-08-21 17:06:07 +0000 | [diff] [blame] | 123 | |
| 124 | Extension Modules |
| 125 | ----------------- |
| 126 | |
| 127 | Library |
| 128 | ------- |
| 129 | |
Guido van Rossum | 893523e | 2007-01-10 01:29:06 +0000 | [diff] [blame] | 130 | - Removed all traces of the sets module. |
| 131 | |
Raymond Hettinger | 4901a1f | 2004-12-02 08:59:14 +0000 | [diff] [blame] | 132 | Build |
| 133 | ----- |
| 134 | |
Raymond Hettinger | 4901a1f | 2004-12-02 08:59:14 +0000 | [diff] [blame] | 135 | C API |
| 136 | ----- |
| 137 | |
Raymond Hettinger | 4901a1f | 2004-12-02 08:59:14 +0000 | [diff] [blame] | 138 | Tests |
| 139 | ----- |
| 140 | |
Brett Cannon | ced04e0 | 2005-02-13 22:53:22 +0000 | [diff] [blame] | 141 | Documentation |
| 142 | ------------- |
| 143 | |
Raymond Hettinger | 4901a1f | 2004-12-02 08:59:14 +0000 | [diff] [blame] | 144 | Mac |
| 145 | --- |
| 146 | |
Hye-Shik Chang | 4e42281 | 2005-07-17 02:36:59 +0000 | [diff] [blame] | 147 | New platforms |
| 148 | ------------- |
| 149 | |
Raymond Hettinger | 4901a1f | 2004-12-02 08:59:14 +0000 | [diff] [blame] | 150 | Tools/Demos |
| 151 | ----------- |
| 152 | |
Skip Montanaro | e5d7f7f | 2002-09-20 14:16:59 +0000 | [diff] [blame] | 153 | **(For information about older versions, consult the HISTORY file.)** |